half-n; 2 Senses

Sense Number 1: not the whole

Commentary: one of two equal parts of a divisible whole

Half a loaf of bread will only last me a day.
Half an hour isn't enough time to finish that test.
A century and one half went by before that land was used again.
George missed the first half of the game trying to park the car.
My date got bored during the second half and left to get drunk.

WordNet 2.0 Sense Numbers: 1 2

Sense Number 2: sports: the middle

Commentary: HALF[+event] the time between two halves of a game - "the half"

At the half there was a great performance.
I missed the performance because I went for snacks at the half.

WordNet 2.0 Sense Numbers: -